Cyclone Melissa is predicted to become a rare category five storm as it turns in the direction of Jamaica, causing deadly sudden floods and rock falls.
The cyclone, which recorded wind speeds of up to 195 km/h as of 0600 Greenwich Mean Time, is presently veering northwest in the Caribbean and is projected to hit the coast by midweek, according to meteorological authorities.
Advisories of blackouts and disruption to utilities have been released as the hurricane produces up to 30 inches of rain and sea level surges as high as 13ft above ground. "Seek shelter now," locals have been told.
Melissa is the thirteenth hurricane in the current Atlantic storm period, which usually concludes in November.
A category five hurricane is the strongest type, with sustained winds of at least 252 km/h.
While this storm is projected to weaken to a fourth-level cyclone before reaching the island, experts said there was "minimal real distinction in the total effects" upon reaching the coast, and that the hurricane will be "at least that intensity" when it hits the island.
With tropical storm-level gusts and precipitation already expected well before it passes over the island's interior - including potentially the national capital - warnings indicate that "readiness efforts must be accelerated".
"A multi-day period of damaging winds and heavy rainfall has started and will cause devastating and dangerous sudden floods and numerous landslides," advised weather authorities.
The country's head of government Andrew Holness commented: "I realize that there are numerous residents who are worried, who are extremely apprehensive, and rightfully so: you should be concerned.
"But the optimal approach to manage anxiety and any apprehension and concern is to be prepared."
Residents are being advised to secure their homes with protective bags and timber panels, and to accumulate basic necessities.
Alerts are also ongoing for parts of the neighboring country including the primary urban center, the neighboring country and eastern Cuba, where this storm is anticipated to bring similar effects by the middle portion of the coming week.
Landslides currently triggered by the hurricane have resulted in two fatalities in the country, according to emergency services.
Melissa is projected to pass over Cuba by the middle of the week before traveling via the Caribbean archipelago and emerging into the Atlantic.
By the time it reaches Cuba, it is forecast to have diminished to a Category 3 hurricane.
While it is difficult to connect individual weather events to environmental shifts, scientists say it is causing weather phenomena more prevalent and more intense.
Higher ocean heat create additional humidity in the environment, aiding in the formation of storms.
Before the beginning of the current Atlantic storm period, climate agencies projected increased storm frequency, mentioning elevated ocean temperatures and possible stronger monsoon activity around West Africa - where tropical systems often form.
Elena Marchetti is a technology journalist with a passion for demystifying complex topics. She has been covering tech trends for over a decade.